Mechanical Seals For Pumps - Engineered Seals Typical Industrial Applications Performance Capabilities Materials Item Description 1, 5 2, 12, 22, 23, 24 3 13 16 18 37 Seal face O-ring Spring Sleeve Housing Pin Assembly fixture PP-S Single Seals Suitable for following equipments Pulp and paper industry Chemical industry All clean none abrasive media Temperature: t = -20 °C ... +140 °C (-4 °F ... +284 °F) Pressure: p ... 25 bar (363 PSI) 1 Sliding velocity: v ... 20 m/s (66 ft/s) g Seal face: Silicon carbide (Q12), Carbon (A) Secondary seals: FKM (V), EPDM (E), FFKM (K) Metal parts: CrNiMo steel (G), Grade 5A (4T), SMO 654 (4U) Ahlstar UP A MS21 range of pumps Sulzer A, APP/APT pumps Sulzer SL mixers Metso conical refiners Stock pumps 33 2 18 13 12 22 2 5 1 3 23 16 24 37 Product Description 1. Single seal configuration 2. Balanced design 3. Independent of direction of rotation 4. Semi-Cartridge construction 5. No dynamic O-ring on the shaft Technical Features 1. O-rings are dynamically loaded to prevent shaft damage 2. Easy and trouble-free installation 3. Due to large radial clearance the damage to the seal faces are avoided, in addition to the seal faces being protected by strong steel parts 4. Misalignment during installation and operations is reduced due to the static springs